Machine for bolting flour and cleaning middlings



V(No Model.) l 2 Sheets-Sheet l.

` B. T. TRIMMER.

MACHINE FOR BOLTING PLOUR AND GLEANING MIDDLINGS.

- 2 Sheets-Sheet 2.

B. T. TRMMER. v MACHINE PGR BOLTING FLOUR AND CLEANING MDDLINGS.

No. 287,890. Patented Nov. 6, 1883.

(No Model.)

vIo

ior cleaning the cloths.

Nrrnn STATES; PATENT rricn.

` BENJAMIN rr. TRIMMER, or ROCHESTER., n n-w YORK.

i MACHINE For: Bom-ING Fioue AND CLEANING MIDDLINGS.

SPEGIFIGATIO forming part of Letters Patent No. 287,890, dated November6, 1883.

Application tiled February 2,1381. (No model.)

To @ZZ whom it may concern:

Be it known that I, BENJAMIN T. TRIMMER, a citizen of the United States,and residing in the city of Rochester, in the county of Monroe and`State of NewYork, have invented certain new and useful Improvements inMachines for Bolting-v Flour and Cleaning Middlings in one Operation, ofwhich the following is a full, clear, and exact description, rei erencebeing had to the accompanying drawings, making part ci' thisspecification, and to the letters and gures marked thereon.

Figure l is a longitudinal vertical section of the machine, cut throughthe center thereof. Fig. 2 is a transverse vertical section .of themachine, shmving the ends of the reels and conveyors, side spouts, andair receptacles abovethe reels. Fig. 3 is a transverse vertical sectionofthe upper portion of the machine from the center of the reels to thetop, showing the construction of the reels in sections and the inode offastening them together with bolts and screws; also .the upperair-receptacles, A and B, and the conveying-spout m n for conveying Vthegood flour from the upper conveyors to the head of the reels. Fig. 4: isa view of a portion of the reels, showing the balls and cords forcleaning the cloths, the air-openings at the headofthe reel for thesaine purpose. Fig. 5 is a top view of a portion of the reels, showingtwo sections of the same, their mode of fastening by means of boltsandscrews, and also the ballsand cords My invention consists in acertain new construction and arrangementv of bolting-reels and means forcreating air-currents, as hereinafter described, and particularlypointed out in the claims, whereby our and` middlings can be cleanedmore eectually vfrom bran, specks, and all impurities in a much bettermanner and with greater ease, and `ivithoutthe waste attending othermethods heretofore used in such operations.

To enable others skilled in the art to construct and use my invention, IWill now -proceed to describe its` construction and operation, which maybest be done by detailingthe various operations through which the ilour'and middlingsgo from their entrance into themachine to their exittherefrom.

Thebolting apparatus consists of three reels,

Sos. l, 2, and 3, of uniform length, placed one partment or hopper,designated by the letter K. At. either end of this compartment or hopperK are air-chambers E and J, extending the Width of the chest andfrom topto bottom.

Above the reel-chest are two receptacles,

marked A and B, with conveyors W andV in the bottom of each,respectively. Into these receptacles light particles of flour andimpurities are carried from the reels by the currents of air irstadmitted in the end of the side spouts, H. At either end of thereceptacle B that may be desired is placed asuction-fan.

(Shown at F or by the dotted lines at F.) All the airlcurrents in thevarious parts of the machine are produced by this fan F, air being drawnfrom the outside oi' the machine through the openings c in theair-chamber E at the end of the machine. From this air-chamber Ecurrents of air are drawn into the inner reel, No. 1, at the centralopening, D, around the shaft @,also through the side spouts, H and H,which run the entire ylength of the chest, and communicate With theair-chamber E through the side openings, marked g. These openings garehprovided with valves to regulate the amount of air introduced.Openings can also be made in the side spouts, H and H, leading directlyto the outside of the insideoi the other around one central shaft,

building by tubes, from whence pure air can be drawn, thus preventingtheintroduction into the chest of impure air laden with particles offine flour and dust from the mill, the 'prevalent source of so manyflour-mill explosions. The amount of air introduced to IOO chine fromthe burrs, conveyers, or bins by the spout c, dropping upon the shortconveyer the reel and out through the bran-tube at 7i to openings G or Ninto the dust-room.

the outside of the machine. The cylinder j forms a continuation of theinner reel, the end ofthe chest where it empties the bran, &c., into thetube h. The-bran passing out this tube will not be disturbed bythe airin the chambei J, as the air will pass around this tube and cylinderj.The goodrmiddlings and flour pass through the cloth into the secondreel, No. 2, where they are met by another current of air, when stilllighter particles of bran and specks are carried oft along the reel andby the suction of air up into the receptacle A and out through the fan Fand spout G or N into a dustroom. vThe goodflour and middlings will passthrough the cloth of the reel into the third reel, No. 3, covered withstill finer cloth, and where the material sifted through No. 3 issubjected'to a current of air applied to the outer sides of the clothand coming from the openings g in the side spouts, H. This current ofair carries all specks and fuzzy substances down to the lower end of thereel onto the coarse cloth where the middlings are purified, ashereinafter described. All the flour that passes throughthe cloths ofthe reels on that portion between the partitions U and T falls into theconveyer L, where the first grade is carried out to the opening at d anddischarged. The second-grade our is allowed to drop through the slides sinto the conveyer M, which carries it to the opening e. Of the' bran,specks, and impurities carried to the ends of the reels Nos. 2 and 3 theheavier ones will fall to the bottom of the chamber J and out of theopening at R, while the lighter ones lare carried by the air-current upto the fan F and out of th The side openings, f, in the air-receptacle Aare provided with valves to regulate the air to suit the differentgrades of iiour and middlings treated. Vhatever light impurities comethrough the cloths of the different reels will, if these valves at fareopen, be carried up by the force of the air and will enter through theseopenings f into the receptacle A. Here the light impurities will becarried off, as before described, through the fan F, and whatever goodflour or middlings there may be will fall into the conveyer W and becarried back to the head of the reels, falling through the spout shownby m n in Fig. 3 and into the short conveyer b and into the innergreeland rebolted.

Whatever light impuritiesV may be drawn up into the receptacle B will becarried by the conv eyer V back to the end and dropped into the chamberJ, where they will fall with the others into the bottom and out at theopening at R.

To prevent the ilour and middlings from passing down the inclined reelstoo quickly there can be inclined return-boards placed on the differentsections of the reels, as shown at o", Fig. l, made of tin oranysuitable material,

In the head of `the reels and between the I cloths forming the differentreels are circular openings, (shown at ,Fig. l.) In the partition U ofthe chest are similar openings, 7c, into the air-chamber E. Vhen, by therevolution of the reels, these openings fi and `la come opposite eachother a current of air is drawn through and upon the cloths of thediiferent reels, blowing the dust from the meshes of the cloth, andserving to keep them clean, in addition to the device of the balls andcords, hereinafterto be described.

By the construction of these reels, as shown in Fig. 3, 4, and 5, theyare made in different sections,large and small, and fastened together bybolts at P, and also by similar bolts, P, to the arms Q radiating fromthe centra] shaft, C. Each section is thus made independent of everyother one. If it is desired to remove the cloth on any part of any reelit can be done by unscrewing and removing the section or sectionsrequired without disturbing any of the others. As it is frequentlydesired to change the grade of bolting-cloth to suit different kinds offlourl and middlings, this is a very desirable arrangement.

Any number of reels can be placed on one set of arms, and the reels canbe made circular, or with six or any number of sides desired.

Attached to each section of the different reels Nos. l, 2, and 3,`is acord or rope marked "w, resting on the different cloths of all thedifferent reels, as shown in Figs. 4t and 5. On these cords w are placedballs marked o, made of any suitable material. Attached to the mainlines and at right angles with them are similar cords and balls, asshown in Fig. 5. When the reels revolve, these balls and cords willslide and fall over the cloths in each section of the different reels,and will bound from one side to the other, and from the cloth of onereel to that of another in such a manner as to keep the cloths clean andfree them from the particles of ilour and dust that may adhere. Thelines Jor cords w can be used to clean the cloths without using theballs.`

If it is deemed necessary cylindrical or slid- IOO IIO

ing brushes can be put in between the differesteso f the chest to theother, and from the convcyer L to the bottom of the receptacle A, thusformis called the purifying-chamber.

ingadivision inthehopper K,beforedescribed. The space contained betweenthis partition T and the partition Z forming the end of the chestis'where the middlings are purified, and There are circular openings inthese partitions T and Z to allow the free turning of the reels, andbetween the edges of these openings and the outer circumference of thereels are placed strips or coverings of cloth tickingv or any suitablematerial, which serve to prevent the passage of air around the outsideoi' the reels, and also topreventthe passage of good flour into thepurifying-chamber from the flour-chamber, or middlings from passing intothe airchamber J. Those portions of the reels embraced between thepartitions T and Z are covered with coarser cloths than the remainingportions. By the action of the air-currents passing from the spouts H upthrough the reels upon the middlings, when they reach this coarse cloththe said middlings are purified. When puriedthegoodmiddiings dropthroughthe cloth into'the conveyor L,'and by drawing the slides s into theconvey er M, which car.- ries them to the opening O where they aredischarged.

.The reels Nos. l, 2, and 3, hopper K, side spouts, H H, conveyors V andW', L and M, and air-receptacles A and B, and air-chambers E and J, areall mounted in a suitable frame or chest, as shown in the drawings.

There can be two or more set-s of l rules placed in one chest or frame,-if desired, all arranged as described, and driven by shafts, gearing,and pulleys, to give t-hem the proper speed for their work. Air-spontaneat H, and provided with the proper'openings and valves, can be made atthe side or' each set of reels, and supplied-with air from theairchainber E by the suction oi' fan F, as deflour, the combination oftwo or more reels of uniform length placed one inside of the other andconstructed of detachable transverse sections, and fastening-bolts forsecuring said sections together, and air-passages F and J at the ends ofthe reels, substantially as and fory the purpose described.

2. The combination of two or more reels 0i' uniform lengths, one insideof the other, different numbers of bolting-cloth upon detachabletransverse sections, and fastening-bolts, as shown, with air-passages 'Fand .I at the ends of the reels, and suction-fan, for the purposeofpurifying flour and middlings, as described.

3. In combination with two or more reels of uniform length, located onewithin the other and having parallel sides, the inclined returnboards rat the en ds of said reels, substantially as and for the' purposedescribed.

4L. The combination of the fan F, two or more reels oi' uniform length,one inside of the other, and the side spouts, II, having closed outersides and open ends, with air-chambers E and J at the ends of saidreels, to supply air to any number of reels in one bolting-chest,

the air being exhausted bythe fan, substantially as shown and described.

5:. In combination with a fan, two or more reels of uniform length, oneinside of the oth er, and two conveyors under said reels, thepurifier-chamber between the two stationary partitions T and Z,extending to the bottom of said conveyors, substantially as and for thepurpose described.

6. In combination with the reels of uniform length, the fan and theair-passage .I at one end of'said reels, the air and dust receptacle Babove said reels, a conveyor in it, the perforated passage E, and sidesponts, H, substantially as and for the purpose described.

7 In combination with the reels, the casing, and the fan F, the air anddust receptacle A, directly above said reels, constructed with the sideopenings, f, and valves fitted to said openings to regulate the amountof air admitted,

IOO

and a conveyor arranged in said receptacle,l

substantially as described.

S. In combination with a fan, the air and dust receptacles A and B,placed one within thelother, and conveyers in the bottom of eachreceptacle, substantially as and for the purpose set forth.

placed one within the other, one or more slack IIO cords fastened to theframe of the reels, and

one or more balls secured to said cords and adapted to rest on the clothof the screens alternately, substantially as shown and described.

y B. T. lBIilIMlilIt. lVitnesses:

NVM. W. BELL, ARCHIBALD CAMPBELL.

